Telegraph-printer.



F.. MERRHT, IELEGRAPH PRINTER. APPLICATION FlLED MAY 1]. IQIIB- Patented Mar. 4,1619.

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, State of New Jersey, have invented ccr UNITED STATES PATENT DFFICE.

BENJAMIN F. MEBRITT, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO 'WESTERN ELECTRIC COMIANY, INCORPORATED, 03E NEW YORK, N. Y., A CORPORATION OF NEW YORK.

TELEG-EBJPH-PRINTER.

Specification of Letters Patent.

Bfatented Mar. 4, 19159.

Application filefi May 11, 1918. Serial No. 238,914.

To all whom it may concern:

Be it known that I, BENJAMIN l Misenrr'r, a citizen of the United States, residing at East Orange, in the county of Esex. Ailn new and useful Improvements in 'llelegrajih- Printers, of which the following is a full, clear, concise, and exact description.

This invention relates to an improvement in printing telegraph typewriters and particularly to a new and improved printing unit.

' It has for its object to provide a simple, reliable and economically manufactured printing unit, in which certain of the parts may be readily assembled, adjusted and removed when desired.

In accordance with the invention, the printing unit comprises a rigid f1 who to which the printing magnet and its armature are attached. The armatuir is pivoted to the-frame in a manner which permits 01. its particularly ready. removal. The printing ram, which is 'part of the mechanism, and operated by the movement of the armature, is mounted in suitable guides on a res iient member, which at its rear position is rig- 'id] y fastened to the frame of the printing mechanism. This resilient member extemls forwardly over the printing magnet and its forward end is adapted to he moved in two directions by .means of adjusting screws which are snitahly mounted in a forward position of the frame. The printing rain may thus readily he adjusted with respect to the printing platen even while the type writer is in operation.

The inventionis disclosed in the drawing, of which Figure 1 is a )liln view of the printing unit; and'l ig. 2 is a side elevation of-the device. I

As illustrated ln the draw ng, the device compr ses a metallic tranie 1, having front i and rear portions 2 and 3, respectively,

up at right angles thereto and offset lugs 4i, at provided with apertures through which eaiend suitable means to fasten the frame 1 to the main frame of the typewriter. Frame 1 is also provided to the rear and at the side with bent-up ea 5,5, which act as journals for the armaturv shaft as will be hereinafter described. A printing magnet is attached to the forward bent-up portion 2 of frame 1, the windings 6 and 7 of which are energized at a suitable time and in a well-known manner to attract an armature 8. The armature 8 is pivotally mounted on a shaft 9 which journaled at each end in apertures in cars 5. Spacer washers 10 are placed around. shaft 9 at each end thereof between the armature 8 and the ears 5. In the retracted position, armature 8 bears against an. adjustable back stop 11 in the form of a screw which extends through the rear bentup portion 3 of the frame 1 and a plate 12, the purpose of which plate 12 will be hereinafter described. The back stop 11 is pro"- vided with a suitable lodging means in the form of a hexagonal nut iv. A. spring plate 14 is fastened at one end to the ame 1 and has two side flanges 15 at its rear which are adapted when in their normal position to ex tend in front of and close to the apertures in cars 5 and thereby prevent longitudinal movement of shaft 9. To remove shaft 9 all that is necessary is to spring flanges 15 to 7 one side and shaft 9 may be readily pushed out. This manner of fastening shaft 9 has the advantage of eli 'ninating the necessity for cotter pins through the end of shaft 9 which break oil and are dillicult to remove readily when desired.

The printing ram 16 is slidalily mounted in journal guides 17 and i8, atta :hed to the tornmrdly extending portion of a resilient member 19, the rear, end 12 of 'whiehis loent downwardly and is fastened rigidly to hent up portion 3 of frame 1. The resilient against the armature 8 in its retracted position The rear end 2% of the ram 16 is rounded to provide a surface of contact with armature S which results in aminimum of dEST AVAILABLE CO:

trietion therelaatween. The front guide 1H for ram 1; i attaehed to the do\\'n\\'ardlj' extending portion 255 of member 1!) and in the form of a slotted cj'liruler. ltam i hae: a pin extending tla-rethrougl'i which i: adapted to slide in this slot and thus prevent any rotation of ram I as it l't:l:l])T'/)t:ttt.tt5.

Attached to the front hent-up portion 2 of frame is a plate 2 whi h extends up wardly therefrom. This plate 26 has two portions extending therefrom at. right. angles, a portion 27 which is hent. into a horizontal plane over the front end of member If), and a portion which i-. hent parallel to and adja rei'it the side portion 20 of memher 19. These portions 27 and 28 are protitled with apertures through which extend adjnstahle screws 2!) and provided with suitable lock-nuts 3 and 52. The heads of screws 29 and 30 and nuts Ill and 52 are preferably hexagonalin shape to permit them to be readily adjusted. It will he notieed that the ofi'aet mrtions [4'v and of plate 2; are 50 hent as not to prevent: aecet-1S to the screw? 29 and i and nuts 31 and 32 from the front of the maehine so that these may he readily adjueted with a wreneh. The end of screw 25) adapted to hear against, the forward upper l'aee oi memher 1t) and the screw 30 against the face of plate 20. The meml'ier 19 is :o de.-.i'{ned that its: resil ieln" (Illllfilr it to tend to press firmly against g-erew-= 2!) and Il 'lhe forward end of ram 16 is preferahl squared and providml with a rah-her cap 33. A type wheel or platen 31- i8 located :uljaeent, the end of ram 16 and it. is; to lteep the squared end of ram i in proper aimed relation with platen 34 that this device intended.

In the operation of the devic .\vhenerer the printing magnet is en l arrnatnre *5 is attraeted and throw: an: i t'ortrard with onsiderahle for e against the platen 34. Spring 21 r turns the ram to it: normal position carrying armature hach' with it against the. t 'lx' top 1]. Wh never it found that th charm-ter are not heing prop rly printed lN' fHllli ol the 'a t that; the ram and plate are not properlr alined the screws '15) and fi lare m ved to spring th front end of memh r 19. therein n'ioving ram 16 in the direction HMPBKEII'IV to eame the proper alinement'.

\Vhat clain'ied is:

1. in a tele' raph printer. a printing unit comprising a l'rame, a spring plate having one nd tree and th oth r nd rigidly at tach d tosaitl frame a printing ram Flidahly ounted in guidw, along the free portion oi said spring plate, and adjuding means mounted on said 'l'ran'ie and adapted to to operate with .the free end of Paid spring plate to-mme eaid free end and change the direction of the axis of the printing ram.

add printing magnet, an armature actuated t hy said printing magnet and adapttal to actuate said printing rann and adjusting means mounted on said frame and adapted. to eo iji l'attt with th free end of Said spring plate to more said free end and change the dirt-etion of the axes of the printing ram.

:3. ln a telegraph printer, a printing unit comprising a frame a spring plate having one end tr e and the oth r end rigidly attached to Said frame, a printing ram slidahl mounted in guides along the free portion of said spring plate and a pair of adjuFting screws having axex at right angles to each other and mounted on said l'ran'ie, said adjusting screws adapted to ontact; and cooj'ierate with the tree end ol said i plate to more said free end and adju t the printing ram.

1-. In a tele raph printer. a printing unit omprising a l'rame a, printing magnet; mount d on said l'rame. a Fpring plate hav -ing one, end free and the other end rigidly attached to Ffll l frame, a printing ram slidahl mounted in guide-z along the free porlion ol' t-aid ;-pring plate and ext nding over the printing magnet. an armature aetuated h said printing magnet and adapted to a tuate aid printing ranrv and a pair of adjusting re\\'.+ having their axes; at right; angles to each oth r and mounted on said frame. -aid adju-ting .screws h ing adapt d to onta t and c op rate with the free end of Ftll l spring plate to adjuet he printing l'tllll.

.7. in a t legraph printer. aprinting unit, omprieing a frame. a printing magn t mounted on said frame. a springplatehating on end tree and the other end rigidly a.t-- tar-lied to t-aid fram :-'aid fre end xtending l'oru'ardly over the printing magnet. a printing ram slidahly mounted in guides along the tre portion of said spring plate. an armature mounted on aid frame and a tnated h =aid 'irinting magnet,said armature ontacting with and adapted to more aid printing ram in the printing direction, resilient means connecting said frame and :-.aid ram and adapted to return theram to normal condition after its actuation, and a pair of adjusting screws having their axes at right angle-; to each other and mounted on :--aid frame, said adjustingwrmvs adaptd to riontactand oiiperate with the free end of said spring plate to adjust the print ing ram.

6. In a telegraph printer. a printing mit mamas comprising a frame, a Plifltillg min, a primiing magnet mounted on said frame, an armature actuated by said printing magnet 1nd adapted to coijperate with said printing ram, a shaft on which said armature is- '.pivoted szud shaft naked in portions of at each end being jourthe frame, and a spring plate attached at one end to the fifime and having free end portions adapted to lie adjaeent to each end of said shaft to preven}; 10

iongitudinal motion thereof.

In witness whereof, I hereunto subscribe my name this 8th day 01 May, A. 1).; 1918.

BENJAMIN F. MERRITT. 

